The aurora and solar activity archive

Searching for historical solar and auroral activity data? The archive is filled with data between the year 1996 and yesterday.

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September 2011

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1

C2.0
Kp1+

2

C1.8
Kp1+

3

C2.5
Kp3

4

M3.2
Kp3

5

M1.6
Kp3

6

X2.1
Kp2+

7

X1.8
Kp3

8

M6.7
Kp2-

9

M2.7
G2

10

M1.1
G2

11

C6.6
Kp4-

12

C9.9
G1

13

C2.9
G1

14

C9.2
Kp2-

15

C4.6
Kp2

16

C9.3
Kp1

17

C1.4
G1

18

C3.8
Kp2

19

C6.9
Kp1

20

C9.5
Kp3

21

M1.8
Kp2

22

X1.4
Kp2

23

M1.9
Kp1-

24

X1.9
Kp2-

25

M7.4
Kp2

26

M4.0
G2

27

C6.4
G2

28

M1.2
G1

29

C2.7
G2

30

M1.0
Kp3
  
       

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/10/26Kp5 (G1)
Number of spotless days in 2019:243
Current stretch spotless days:17

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*since 1994

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